<template>
    <div class="recommend" ref="recommend">
      <scroll class="recommend-content" :data="discList" ref="scroll">
        <div>
          <div v-if="recommends.length" class="slider-wrapper">
            <slider>
              <div v-for="(item,index) in recommends" :key="index">
                <a :href="item.linkUrl">
                  <img :load="LoadImage" :src="item.picUrl" class="needsclick">
                </a>
              </div>
            </slider>
          </div>
          <div class="recommend-list">
            <h1 class="list-title">热门歌单推荐</h1>
            <ul>
              <li v-for="(item, index) in discList" :key="index" class="item" @click="selectItem(item)">
                <div class="icon">
                  <img width="60" height="60" v-lazy="item.imgurl">
                </div>
                <div class="text">
                  <h1 class="name" v-html="item.creator.name"></h1>
                  <p class="desc" v-html="item.dissname"></p>
                </div>
              </li>
            </ul>
          </div>

        </div>
        <div class="loading-container" v-show="!discList.length">
          <loading></loading>
        </div>
      </scroll>
      <router-view></router-view>
    </div>
</template>
<script>
import { getRecommend, getDiscList } from 'api/recommend.js'
import { ERR_OK } from 'api/config.js'
import slider from 'base/slider/slider'
import scroll from 'base/scroll/scroll'
import loading from 'base/loading/loading'
import { playlistMixin } from 'common/js/mixin'
import {mapMutations} from 'vuex'

export default {
  mixins: [playlistMixin],
  data() {
    return {
      recommends: [],
      discList: [],
      checkLoaded: false
    }
  },
  created() {
    this._getRecommend()
    this._getDiscList()
  },
  methods: {
    selectItem(item) {
      this.$router.push({
        path: `/recommend/${item.dissid}`
      })
      this.setDisc(item)
    },
    handlePlaylist(playlist) {
      const bottom = playlist.length > 0 ? '60px' : ''

      this.$refs.recommend.style.bottom = bottom
      this.$refs.scroll.refresh()
    },
    _getRecommend() {
      getRecommend().then((res) => {
        if (res.code === ERR_OK) {
          this.recommends = res.data.slider
        }
      })
    },
    _getDiscList() {
      getDiscList().then((res) => {
        if (res.code === ERR_OK) {
          this.discList = res.data.list
        }
      })
    },
    LoadImage() {
      // 添加标志位，只要有一张图片加载完成就刷新，其他不用刷新，避免浪费资源
      if (!this.checkLoaded) {
        this.$refs.scroll.refresh()
        this.checkLoaded = true
      }
    },
    ...mapMutations({
      setDisc: 'SET_DISC'
    })
  },
  components: {
    slider,
    scroll,
    loading
  }
}
</script>
<style lang="stylus" scoped>
@import '~common/stylus/variable'

.recommend
  position: fixed
  top: 88px
  bottom: 0
  width: 100%
  .recommend-content
    height: 100%
    overflow: hidden
    .slider-wrapper
      position: relative
      width: 100%
      overflow: hidden
    .recommend-list
      .list-title
        height: 65px
        line-height: 65px
        text-align: center
        font-size: $font-size-medium
        color: $color-theme
      .item
        display: flex
        padding: 0 20px 20px 20px
        .icon
          flex: 0 0 60px
          width: 60px
          padding-right: 20px
        .text
          flex: 1
          display: flex
          flex-direction: column
          justify-content: center
          line-height: 20px
          overflow: hidden
          font-size: $font-size-medium
          .name
            margin-bottom: 10px
            color: $color-text
          .desc
            color: $color-text-d
    .loading-container
      position: absolute
      width: 100%
      top: 50%
      transform: translateY(-50%)
</style>